Machine for washing the blankets of printing machines



' Oct. 21 1924. 1,512,337

T. HINDLE ET AL MACHINE FOR WASHING THE BLANKETS OF PRINTING MACHINES Filed Sept. 26, 1922 s Sheets-Sheet l Oct. 21 192 v 1,512,537

T. HINDLE ET AL MACHINE FOR WASHING THE BLANKETS OF PRINTING MACHINES Filed Sept. 26 1922 3 Sheets-Sheet 3 INVENTOR Oct. 21 a 1924.

T. HINDLE ET AL MACHINE FOR WASHING THE BLANKETS OF PRINTING MACHINES Filed Sep t. 26, 1922 3 Sheets-Sheet 5 Patented Oct. 21, 1924.

UNITED STATES tense? PATENT OFFICE.

THOMAS I-IINDLE, OF GLOSSOP, AND ARTHUR EDWIN BIRCH, OF DINTING, ENGLAND.

MACHINE FOR WASHING THE BLANKETS OF PRINTING MACHINES.

Application filed. September 26, 1922. Serial No. 590,?06.

To all whom it may concern.

Be it known that we, THOMAS HINDLE and ARTHUR EDWIN BIRCH, both British subjects, THoMAs HINDLE residing at Glossop, count-y of Derby, England, and ARTHUR ED- WIN Binorr at Dinting, county of Derby, England, have invented certain new and useful In'iprovements in Machines for "Washing the Blankets of Printing Machines, of which the following is a specification.

This invention relates to improvements in machines for washing the blankets of calico and like printing machines.

The invention consists in mounting a number of brushes at intervals on the periphery of a rotary drum or roller or on discs or flanges mounted on a central shaft with guide rollers alternating with and disposed between each pair of brushes, the blanket being passed through the machine with its face side against the brushes.

The invention will be described with reference to the accompanying drawings.

Fig. 1. is a vertical section of the machine.

Fig. 2. is a vertical section at right angles to Fig. 1.

Fig. 8. is an end view of one of the end discs carrying the brushes, E and rollers G.

Fig. 4c. is a detail of the doctors at substituted for bristles.

Fig. 5. is a detail of rotary brush.

Discs or flanges A are mounted at each end of a central shaft B, and at intervals around the periphery alternating with one another a series of brushes E and a series of guide rollers G are mounted the position of the rollers being such as to prevent undue pressure of the blanket l-I upon the brushes. Each disc or flange A carries a number of adjustable bearing brackets C arranged at equal intervals around them. Each bearing bracket C is provided with slots 0 through which pass the bolts 0, atiixing the bearing to the disc. The inner edge of the bearing bracket C is provided with a lug or projection 0 against which the end of the adjusting screw d abuts.

The adjusting screw cl passes through a nut (2 formed on the end of a screw 01 passing through the disc A. A look nut d is also provided to lock the adjusting screw at in position. To adjust the position of the bearing bracket C it is only necessary to slacken the bolts 0' and the lock nut d and screw the adjusting screw 03 to bring the bearing C to the desired position.

A flat brush E with bristles E extends from each of the bearing brackets C on one end disc. to the corresponding bearing brackets C on the other end disc, the brush being clamped in position thereon by the plates 6' and bolts 6. Between each of the adjustable bearing brackets C a bearing bracket F is affixed to the disc A and each pair of these bearing brackets carry a guide roller G. The rollers G guide the blanket over the brushes E as shown in Fig. 2.

The shaft B is mounted in bearings b in a suitable trough or vessel K at the upper part of which are fixed guide rollers R to guide the blanket H to the washing machine K from the printing machine (not shown) and from the washing machine to the drying cylinders (not shown).

The blanket H is fed to the washing machine so that its face side will come into contact with the brushes E. ater is sprayed on to the face side of the blanket H by means of nozzles M or perforated pipes before it reaches the brushes E and also if desired after being brushed thereby. A steel or rubber doctor N also acts on the face of the blanket as it leaves the washing machine. The flat brushes E may be replaced by rotary brushes E as shown in Fig. 5 driven through gearing from the central shaft.

The central shaft is preferably rotated by 'a pulley in the opposite direction to the direction of travel of the blanket H through the washing machine so that the face of the blanket is subjected to the greatest action of the brushes, and the water is constantly kept in agitation against the face of the blanket.

A washing machine constructed as described. washes all the colour off the blanket. so that no scraping is required, thus saving time and preventing flushing or creasing of the blanket.

Where caustic colours are employed in the printing machine which would destroy the bristles of the brushes, doctor blades of rubber or other material can be employed instead of bristles as shown in Fig. 4.

What we claim as our invention and desire to protect by Letters Patent is 1. A machine for Washing the blankets of calico and other printing machines comprising a trough shaped vessel, a central shaft rotating therein, a plurality of brushes disposed around the shaft, adjustable bearing brackets carrying said brushes, means mounted on the shaft for carrying the brackets and guide rollers arranged between the Water to the blanket and :1 doctor to act on the face of the blanket as it leaves the nmchine substantially as described.

In testimony whereof we have hereunto set our hands in presence 01 two subscribing Witnesses.

THOMAS HINDLE. ARTHUR EDlVlN BIRCH. Vitnesses J. Ownnx OBninN. BRIAN OBRIEN. 

